KNOXVILLE, Tenn. (WVLT) - UPDATE
Police have released the names of those involved in Friday's deadly shooting.
A preliminary investigation says Michael Little, 21, went to the home on Inskip Road to see his former girlfriend, Ashley Womack, 18.
After getting to the Womack's home, Little reportedly talked with the family and a family friend who were on the back patio.
Officers say Little then walked down the driveway towards his car when he pulled a .45 caliber handgun and shot Rhonda Womack, 47, the mother of Ashley, and the family friend, Travis Wegener, 28.
That's when police say Little went to the back of the home and shot Ashley.
Officers say Ashley's 20-year-old brother, Joshua Womack, tried to protect his family by getting a .22 caliber rifle from inside. Little was shot more than once during the shootout.
Wegener was pronounced dead at the scene. Ashley was taken to UT Medical Center where she was treated and released for a gunshot wound to her leg.
Rhonda is in serious condition at UT Medical Center with a gun shot wound to her upper shoulder.
Little was pronounced dead upon arrival at UT.
Joshua Womack and his Father, Guy Womack, were not injured.
Police say Little was a Cadet for KPD. The program is designed for people 21 and younger, to get a look at career opportunities within law enforcement.
Their job duties include answering phones, writing parking citations and other assignments.
Cadets are non-sworn civilian employees and are not issued a handgun.
Knoxville Police Chief David Rausch says the cadet came to the home where a woman, her son and daughter, and a family friend were all staying.
Rausch says an argument started between the cadet, who has not been identified, and the family friend. Rausch says at one point, the cadet began shooting, killing the friend. The son then shot the police cadet, killing him.
The mother and daughter were also shot and taken to UT Medical Center. Their conditions have not been released.
Chief Rausch says the cadet did not use a police issue firearm and that cadets are not issued firearms.
No names have been released. We are continuing to follow this story and will bring you much more as soon as it develops.